US20200333471A1 - Antenna structure and wireless communication device using the same - Google Patents

Antenna structure and wireless communication device using the same Download PDF

Info

Publication number
US20200333471A1
US20200333471A1 US16/387,150 US201916387150A US2020333471A1 US 20200333471 A1 US20200333471 A1 US 20200333471A1 US 201916387150 A US201916387150 A US 201916387150A US 2020333471 A1 US2020333471 A1 US 2020333471A1
Authority
US
United States
Prior art keywords
antenna
angle
antenna portion
feeding
region
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US16/387,150
Inventor
Yi-Hao Chang
Po-Chi Wang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ambit Microsystems Shanghai Ltd
Original Assignee
Ambit Microsystems Shanghai Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ambit Microsystems Shanghai Ltd filed Critical Ambit Microsystems Shanghai Ltd
Priority to US16/387,150 priority Critical patent/US20200333471A1/en
Assigned to AMBIT MICROSYSTEMS (SHANGHAI) LTD. reassignment AMBIT MICROSYSTEMS (SHANGHAI) LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHANG, YI-HAO, WANG, PO-CHI
Priority to TW108116327A priority patent/TWI734982B/en
Priority to CN201910400989.8A priority patent/CN111834740A/en
Publication of US20200333471A1 publication Critical patent/US20200333471A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/35—Constructional details or hardware or software details of the signal processing chain
    • G01S19/36—Constructional details or hardware or software details of the signal processing chain relating to the receiver frond end
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
    • G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
    • G01S19/13—Receivers
    • G01S19/35—Constructional details or hardware or software details of the signal processing chain
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/2258—Supports; Mounting means by structural association with other equipment or articles used with computer equipment
    • H01Q1/2266—Supports; Mounting means by structural association with other equipment or articles used with computer equipment disposed inside the computer
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
    • H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
    • H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
    • H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
    • H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
    • H01Q15/24—Polarising devices; Polarisation filters 
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q21/00—Antenna arrays or systems
    • H01Q21/24—Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
    • H01Q25/001—Crossed polarisation dual antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
    • H01Q3/30—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array
    • H01Q3/34—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture varying the relative phase between the radiating elements of an array by electrical means
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
    • H01Q9/0428—Substantially flat resonant element parallel to ground plane, e.g. patch antenna radiating a circular polarised wave
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/30—Resonant antennas with feed to end of elongated active element, e.g. unipole
    • H01Q9/40—Element having extended radiating surface

Definitions

  • the subject matter herein generally relates to antennas.
  • a typical GPS patch antenna can meet the needs of users in receiving satellite signal, it is large in size and high in cost, and is not easy to be integrated into small and medium-sized products.
  • FIG. 1 is an isometric view of an embodiment of an antenna structure used in a wireless communication device.
  • FIG. 2 is a rear view of the antenna structure of FIG. 1 .
  • FIG. 3 is a front view of the antenna structure of FIG. 1 .
  • FIG. 4 is an axial ratio graph of the antenna structure shown in FIG. 1 .
  • FIG. 5 is a scattering parameter graph of the antenna structure shown in
  • FIG. 1 is a diagrammatic representation of FIG. 1 .
  • FIG. 6 is a schematic diagram of a clockwise polarization of the antenna structure of FIG. 1 .
  • FIG. 7 is a schematic diagram of a counterclockwise polarization of an antenna structure.
  • substantially is defined to be essentially conforming to the particular dimension, shape, or other feature that the term modifies, such that the component need not be exact.
  • substantially cylindrical means that the object resembles a cylinder, but can have one or more deviations from a true cylinder.
  • comprising when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series, and the like.
  • the present disclosure is described in relation to an antenna structure and a wireless communication device using the same.
  • FIG. 1 illustrates an embodiment of antenna structure 100 used in a wireless communication device 200 .
  • the antenna structure 100 is configured for receiving and transmitting wireless signals.
  • the wireless communication device 200 can be, for example, a mobile phone, a personal digital assistant.
  • the electronic device 200 also includes other structures and components, which are not described in the present disclosure.
  • the antenna structure 100 includes a substrate 10 , a first antenna 20 , and a second antenna 30 .
  • the antenna structure 100 is a global positioning system (GPS) antenna and can operate in a frequency band of about 1575 MHz-1620 MHz.
  • GPS global positioning system
  • the substrate 10 can be a printed circuit board (PCB) positioned in the electronic device 200 .
  • the substrate 10 includes a first surface 11 and a second surface 12 opposite the first surface 11 .
  • the first antenna 20 and the second antenna 30 are respectively attached to the first surface 11 and the second surface 12 . Projections of the first antenna 20 and the second antenna 30 on the substrate 10 are coincident.
  • the first antenna 20 and the second antenna 30 can generate waves of opposite but equal amplitude and of linear orthogonal polarization thereby forming an antenna radiating waves in a circular polarization.
  • a difference between amplitudes and phase angles of electric fields of the first antenna 20 and the second antenna 30 are 180°.
  • the substrate 10 further includes two parallel and opposite end portions 13 and two parallel and opposite side portions 14 .
  • the end portions 13 are perpendicularly connected to ends of side portions 14 , to form a substantially rectangular substrate 10 .
  • the first antenna 20 includes a first antenna portion 21 , a second antenna portion 23 , and a feeding portion 25 .
  • the first antenna portion 21 and the second antenna portion 23 have the same structure and are substantially strip-shaped.
  • the first antenna portion 21 and the second antenna portion 23 are both monopole antennas.
  • the first antenna portion 21 is positioned along one of the end portions 13 .
  • the second antenna portion 23 is positioned along one of the side portions 14 .
  • the first antenna portion 21 and the second antenna portion 23 are perpendicularly connected at angle A of the substrate 10 .
  • the feeding portion 25 is substantially strip-shaped.
  • One end of the feeding portion 25 is connected to the angle A, the other end of the feeding portion 25 extends so as to bisect the angle A (that is, the feeding portion 25 meets the first antenna portion 21 and the second antenna portion 23 at about 45°).
  • the first antenna portion 21 , the second antenna portion 23 , and the feeding portion 25 form a substantially rectangular first antenna region B 1 on the first surface 11 .
  • the second antenna 30 includes a third antenna portion 31 and a grounding portion 33 .
  • the third antenna portion 31 is substantially strip-shaped. A structure of the antenna portion 31 is substantially the same as that of the feeding portion 25 , the third antenna portion 31 is positioned on the substrate 10 to correspond to the feeding portion 25 . Projections of the third antenna portion 31 and the feeding portion 25 on the substrate 10 are substantially coincident.
  • the third antenna portion 31 forms a substantially rectangular second antenna region B 2 corresponding to the first antenna region B 1 on the second surface 12 .
  • One end of the third antenna portion 31 is connected to an angle of the second antenna region B 2 .
  • the other end of the third antenna portion 31 extends so as to bisect the angle of the second antenna region B 2 .
  • the second antenna region B 2 is substantially coincident with the first antenna region B 1 .
  • a remaining area of the second surface 12 forms the grounding portion 33 .
  • FIG. 4 is an axial ratio graph of the antenna structure 100 of FIG. 1 .
  • a frequency band of the antenna structure 100 having an axial ratio of less than 3 dB can achieve 180 MHz.
  • FIG. 5 shows a scattering parameter graph of the antenna structure 100 .
  • a frequency band of the antenna structure 100 having an S-parameter of less than ⁇ 10 dB can achieve 110 MHz. Comparing the antenna structure 100 with a typical patch circularly polarized antenna, the antenna structure 100 has a wider axial ratio and a wider bandwidth. This reduces any characteristic shift caused by the environment, thereby obtaining a stable antenna radiation performance. Meanwhile, the antenna structure 100 is directly formed on the substrate 10 . In comparison with the typical patch circularly polarized antenna, the antenna structure 100 has advantages of small size, low cost, and easy integration into small devices.
  • the first antenna 20 can be right-hand (clockwise) polarity to form a first antenna 20 a .
  • the first antenna 20 a includes a first antenna portion 21 a , a second antenna portion 23 a , and a feeding portion 25 a .
  • An end of the first antenna portion 21 a is perpendicularly connected to one of the end portion 13 .
  • the other end of the first antenna portion 21 a extends along a direction parallel to the first side portions 14 .
  • An end of the second antenna portion 23 a is perpendicularly connected to one of the side portions 14 .
  • the other end of the second antenna portion 23 a extends along a direction parallel to the end portions 14 and is perpendicularly connected to the first antenna portion 21 a to form an angle.
  • the angle between the first antenna portion 21 a and the second antenna portion 23 a is 90°.
  • the feeding portion 25 a is positioned between the first antenna portion 21 a and the second antenna portion 23 a .
  • An end of the feeding portion 25 a is connected to the angle between the first antenna portion 21 a and the second antenna portion 23 .
  • the other end of the feeding portion 25 a extends so as to bisect the angle.
  • a structure of an antenna structure 100 a is substantially the same as that of the antenna structure 100 .
  • a difference between the antenna structure 100 a and the antenna structure 100 is that the antenna structure 100 a includes a first antenna 20 b .
  • the first antenna 20 b is positioned at angle C of the substrate 10 and is symmetrical with the first antenna 20 relative to a central axis D of the substrate 10 .
  • the first antenna 20 b can be left-handed (counterclockwise) polarity to form a first antenna 20 c .
  • the first antenna 20 c is symmetrical with the first antenna 20 a relative to the central axis D of the substrate 10 .
  • the antenna structures 100 , 100 a achieve a better reception and radiation by circular polarizations to the left and to the right.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • General Engineering & Computer Science (AREA)
  • Variable-Direction Aerials And Aerial Arrays (AREA)
  • Waveguide Aerials (AREA)

Abstract

An antenna structure providing an improved GPS communication includes a substrate having a first surface and a second surface opposite to the first surface, a first antenna attached to the first surface, and a second antenna attached to the second surface. The first antenna and the second antenna generate waves of equal but opposite amplitude and linear orthogonal polarization thereby forming an antenna with circular polarity.

Description

    FIELD
  • The subject matter herein generally relates to antennas.
    • BACKGROUND
  • Although a typical GPS patch antenna can meet the needs of users in receiving satellite signal, it is large in size and high in cost, and is not easy to be integrated into small and medium-sized products.
  • Therefore, there is room for improvement within the art.
    • BRIEF DESCRIPTION OF THE DRAWINGS
  • Implementations of the present disclosure will now be described, by way of embodiment, with reference to the attached figures.
  • FIG. 1 is an isometric view of an embodiment of an antenna structure used in a wireless communication device.
  • FIG. 2 is a rear view of the antenna structure of FIG. 1.
  • FIG. 3 is a front view of the antenna structure of FIG. 1.
  • FIG. 4 is an axial ratio graph of the antenna structure shown in FIG. 1.
  • FIG. 5 is a scattering parameter graph of the antenna structure shown in
  • FIG. 1.
  • FIG. 6 is a schematic diagram of a clockwise polarization of the antenna structure of FIG. 1.
  • FIG. 7 is a schematic diagram of a counterclockwise polarization of an antenna structure.
    •  DETAILED DESCRIPTION
  • It will be appreciated that for simplicity and clarity of illustration, where appropriate, reference numerals have been repeated among the different figures to indicate corresponding or analogous elements. In addition, numerous specific details are set forth in order to provide a thorough understanding of the embodiments described herein. However, it will be understood by those of ordinary skill in the art that the embodiments described herein can be practiced without these specific details. In other instances, methods, procedures, and components have not been described in detail so as not to obscure the related relevant feature being described. Also, the description is not to be considered as limiting the scope of the embodiments described herein. The drawings are not necessarily to scale and the proportions of certain parts have been exaggerated to better illustrate details and features of the present disclosure.
  • Several definitions that apply throughout this disclosure will now be presented.
  • The term “substantially” is defined to be essentially conforming to the particular dimension, shape, or other feature that the term modifies, such that the component need not be exact. For example, “substantially cylindrical” means that the object resembles a cylinder, but can have one or more deviations from a true cylinder. The term “comprising” when utilized, means “including, but not necessarily limited to”; it specifically indicates open-ended inclusion or membership in the so-described combination, group, series, and the like.
  • The present disclosure is described in relation to an antenna structure and a wireless communication device using the same.
  • FIG. 1 illustrates an embodiment of antenna structure 100 used in a wireless communication device 200. The antenna structure 100 is configured for receiving and transmitting wireless signals. The wireless communication device 200 can be, for example, a mobile phone, a personal digital assistant. The electronic device 200 also includes other structures and components, which are not described in the present disclosure.
  • Referring to FIG. 2 and FIG. 3 together, the antenna structure 100 includes a substrate 10, a first antenna 20, and a second antenna 30. In an embodiment, the antenna structure 100 is a global positioning system (GPS) antenna and can operate in a frequency band of about 1575 MHz-1620 MHz.
  • The substrate 10 can be a printed circuit board (PCB) positioned in the electronic device 200. The substrate 10 includes a first surface 11 and a second surface 12 opposite the first surface 11. The first antenna 20 and the second antenna 30 are respectively attached to the first surface 11 and the second surface 12. Projections of the first antenna 20 and the second antenna 30 on the substrate 10 are coincident. The first antenna 20 and the second antenna 30 can generate waves of opposite but equal amplitude and of linear orthogonal polarization thereby forming an antenna radiating waves in a circular polarization. In this embodiment, a difference between amplitudes and phase angles of electric fields of the first antenna 20 and the second antenna 30 are 180°.
  • The substrate 10 further includes two parallel and opposite end portions 13 and two parallel and opposite side portions 14. The end portions 13 are perpendicularly connected to ends of side portions 14, to form a substantially rectangular substrate 10.
  • Referring to FIG. 3 again, in this embodiment, the first antenna 20 includes a first antenna portion 21, a second antenna portion 23, and a feeding portion 25. The first antenna portion 21 and the second antenna portion 23 have the same structure and are substantially strip-shaped. In this embodiment, the first antenna portion 21 and the second antenna portion 23 are both monopole antennas. The first antenna portion 21 is positioned along one of the end portions 13. The second antenna portion 23 is positioned along one of the side portions 14. The first antenna portion 21 and the second antenna portion 23 are perpendicularly connected at angle A of the substrate 10. The feeding portion 25 is substantially strip-shaped. One end of the feeding portion 25 is connected to the angle A, the other end of the feeding portion 25 extends so as to bisect the angle A (that is, the feeding portion 25 meets the first antenna portion 21 and the second antenna portion 23 at about 45°). The first antenna portion 21, the second antenna portion 23, and the feeding portion 25 form a substantially rectangular first antenna region B1 on the first surface 11.
  • Referring to FIG. 2 again, the second antenna 30 includes a third antenna portion 31 and a grounding portion 33. The third antenna portion 31 is substantially strip-shaped. A structure of the antenna portion 31 is substantially the same as that of the feeding portion 25, the third antenna portion 31 is positioned on the substrate 10 to correspond to the feeding portion 25. Projections of the third antenna portion 31 and the feeding portion 25 on the substrate 10 are substantially coincident. The third antenna portion 31 forms a substantially rectangular second antenna region B2 corresponding to the first antenna region B1 on the second surface 12. One end of the third antenna portion 31 is connected to an angle of the second antenna region B2. The other end of the third antenna portion 31 extends so as to bisect the angle of the second antenna region B2. The second antenna region B2 is substantially coincident with the first antenna region B1. A remaining area of the second surface 12 forms the grounding portion 33.
  • FIG. 4 is an axial ratio graph of the antenna structure 100 of FIG. 1. As test results show (in FIG. 4), a frequency band of the antenna structure 100 having an axial ratio of less than 3 dB can achieve 180 MHz. FIG. 5 shows a scattering parameter graph of the antenna structure 100. As test results show (in FIG. 5), a frequency band of the antenna structure 100 having an S-parameter of less than −10 dB can achieve 110 MHz. Comparing the antenna structure 100 with a typical patch circularly polarized antenna, the antenna structure 100 has a wider axial ratio and a wider bandwidth. This reduces any characteristic shift caused by the environment, thereby obtaining a stable antenna radiation performance. Meanwhile, the antenna structure 100 is directly formed on the substrate 10. In comparison with the typical patch circularly polarized antenna, the antenna structure 100 has advantages of small size, low cost, and easy integration into small devices.
  • Referring to FIG. 6, the first antenna 20 can be right-hand (clockwise) polarity to form a first antenna 20 a. The first antenna 20 a includes a first antenna portion 21 a, a second antenna portion 23 a, and a feeding portion 25 a. An end of the first antenna portion 21 a is perpendicularly connected to one of the end portion 13. The other end of the first antenna portion 21 a extends along a direction parallel to the first side portions 14. An end of the second antenna portion 23 a is perpendicularly connected to one of the side portions 14. The other end of the second antenna portion 23 a extends along a direction parallel to the end portions 14 and is perpendicularly connected to the first antenna portion 21 a to form an angle. In this embodiment, the angle between the first antenna portion 21 a and the second antenna portion 23 a is 90°. The feeding portion 25 a is positioned between the first antenna portion 21 a and the second antenna portion 23 a. An end of the feeding portion 25 a is connected to the angle between the first antenna portion 21 a and the second antenna portion 23. The other end of the feeding portion 25 a extends so as to bisect the angle.
  • Referring to FIG. 7, a structure of an antenna structure 100 a (a second embodiment) is substantially the same as that of the antenna structure 100. A difference between the antenna structure 100 a and the antenna structure 100 is that the antenna structure 100 a includes a first antenna 20 b. The first antenna 20 b is positioned at angle C of the substrate 10 and is symmetrical with the first antenna 20 relative to a central axis D of the substrate 10. The first antenna 20 b can be left-handed (counterclockwise) polarity to form a first antenna 20 c. The first antenna 20 c is symmetrical with the first antenna 20 a relative to the central axis D of the substrate 10.
  • For satellites located in different orientations, for example, in the northern hemisphere or in the southern hemisphere, the antenna structures 100, 100 a achieve a better reception and radiation by circular polarizations to the left and to the right.
  • The embodiments shown and described above are only examples. Many details are often found in the art such as the other features of the antenna structure and the wireless communication device. Therefore, many such details are neither shown nor described. Even though numerous characteristics and advantages of the present disclosure have been set forth in the foregoing description, together with details of the structure and function of the present disclosure, the disclosure is illustrative only, and changes may be made in the details, especially in matters of shape, size, and arrangement of the parts within the principles of the present disclosure, up to and including the full extent established by the broad general meaning of the terms used in the claims. It will therefore be appreciated that the embodiments described above may be modified within the scope of the claims.

Claims (14)

What is claimed is:
1. An antenna structure comprising:
a substrate comprising a first surface and a second surface opposite to the first surface;
a first antenna attached to the first surface; and
a second antenna attached to the second surface, wherein the first antenna and the second antenna generate waves of opposite but equal amplitude and of linear orthogonal polarization thereby forming an antenna radiating waves in a circular polarization.
2. The antenna structure of claim 1, wherein a difference between amplitudes and phase angles of electric fields of the first antenna and the second antenna are 180°.
3. The antenna structure of claim 1, wherein the substrate further comprises two parallel and opposite end portions and two parallel and opposite side portions, the end portions are perpendicularly connected to ends of side portions, the first antenna comprises a first antenna portion, a second antenna portion, and a feeding portion, the first antenna portion is positioned along one of the end portions, the second antenna portion is positioned along one of the side portions, the first antenna portion and the second antenna portion are perpendicularly connected at an angle of the substrate, an end of the feeding portion is connected to the angle, the other end of the feeding portion extends so as to bisector the angle.
4. The antenna structure of claim 3, wherein the second antenna comprises a third antenna portion and a grounding portion, a structure of the antenna portion is substantially the same as the feeding portion and positioned on the substrate corresponding to the feeding portion, projections of the third antenna portion and the feeding portion on the substrate are substantially coincident, the first antenna forms a first antenna region, the third antenna portion forms a substantially rectangular second antenna region corresponding to the first antenna region on the second surface, an end of the third antenna portion is connected to an angle of the second antenna region, the other end of the third antenna portion extends so as to bisector the angle of the second antenna region, the second antenna region is substantially coincided coincident with the first antenna region, a remaining area of the second surface forms the grounding portion.
5. The antenna structure of claim 1, wherein the substrate further comprises two parallel and opposite end portions and two parallel and opposite side portions, the end portions are perpendicularly connected to both ends of each side portion, the first antenna comprises a first antenna portion, a second antenna portion, and a feeding portion, an end of the first antenna portion is perpendicularly connected to one of the end portion, the other end of the first antenna portion extends along a direction parallel to the first side portions, an end of the second antenna portion is perpendicularly connected to one of the side portions, the other end of the second antenna portion extends along a direction parallel to the end portions and is perpendicularly connected to the first antenna portion to form an angle, an end of the feeding portion is connected to the angle between the first antenna portion and the second antenna portion, the other end of the feeding portion extends so as to bisector the angle.
6. The antenna structure of claim 3, wherein an angle between the feeding portion and one of the first antenna portion and the second antenna portion is 45°.
7. The antenna structure of claim 1, wherein the antenna structure is a global position system antenna and operates in an frequency band of about 1575 MHz-1620 MHz.
8. A wireless communication device comprising:
an antenna structure comprising:
a substrate comprising a first surface and a second surface opposite to the first surface;
a first antenna attached to the first surface; and
a second antenna attached to the second surface, wherein the first antenna and the second antenna generate waves of opposite but equal amplitude and of linear orthogonal polarization thereby forming an antenna radiating waves in a circular polarization.
9. The wireless communication device of claim 8, wherein a difference between amplitudes and phase angles of electric fields of the first antenna and the second antenna are 180°.
10. The wireless communication device of claim 8, wherein the substrate further comprises two parallel and opposite end portions and two parallel and opposite side portions, the end portions are perpendicularly connected to ends of side portions, the first antenna comprises a first antenna portion, a second antenna portion, and a feeding portion, the first antenna portion is positioned along one of the end portions, the second antenna portion is positioned along one of the side portions, the first antenna portion and the second antenna portion are perpendicularly connected at an angle of the substrate, an end of the feeding portion is connected to the angle, the other end of the feeding portion extends so as to bisector the angle.
11. The wireless communication device of claim 10, wherein the second antenna comprises a third antenna portion and a grounding portion, a structure of the antenna portion is substantially the same as the feeding portion and positioned on the substrate corresponding to the feeding portion, projections of the third antenna portion and the feeding portion on the substrate are substantially coincident, the first antenna forms a first antenna region, the third antenna portion forms a substantially rectangular second antenna region corresponding to the first antenna region on the second surface, an end of the third antenna portion is connected to an angle of the second antenna region, the other end of the third antenna portion extends so as to bisector the angle of the second antenna region, the second antenna region is substantially coincided coincident with the first antenna region, a remaining area of the second surface forms the grounding portion.
12. The wireless communication device of claim 8, wherein the substrate further comprises two parallel and opposite end portions and two parallel and opposite side portions, the end portions are perpendicularly connected to both ends of each side portion, the first antenna comprises a first antenna portion, a second antenna portion, and a feeding portion, an end of the first antenna portion is perpendicularly connected to one of the end portion, the other end of the first antenna portion extends along a direction parallel to the first side portions, an end of the second antenna portion is perpendicularly connected to one of the side portions, the other end of the second antenna portion extends along a direction parallel to the end portions and is perpendicularly connected to the first antenna portion to form an angle, an end of the feeding portion is connected to the angle between the first antenna portion and the second antenna portion, the other end of the feeding portion extends so as to bisector the angle.
13. The wireless communication device of claim 10, wherein an angle between the feeding portion and one of the first antenna portion and the second antenna portion is 45°.
14. The wireless communication device of claim 8, wherein the antenna structure is a global position system antenna and operates in an frequency band of about 1575 MHz-1620 MHz.
US16/387,150 2019-04-17 2019-04-17 Antenna structure and wireless communication device using the same Abandoned US20200333471A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
US16/387,150 US20200333471A1 (en) 2019-04-17 2019-04-17 Antenna structure and wireless communication device using the same
TW108116327A TWI734982B (en) 2019-04-17 2019-05-10 Antenna structure and wireless communication device using the same
CN201910400989.8A CN111834740A (en) 2019-04-17 2019-05-14 Antenna structure and electronic device using same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16/387,150 US20200333471A1 (en) 2019-04-17 2019-04-17 Antenna structure and wireless communication device using the same

Publications (1)

Publication Number Publication Date
US20200333471A1 true US20200333471A1 (en) 2020-10-22

Family

ID=72829384

Family Applications (1)

Application Number Title Priority Date Filing Date
US16/387,150 Abandoned US20200333471A1 (en) 2019-04-17 2019-04-17 Antenna structure and wireless communication device using the same

Country Status (3)

Country Link
US (1) US20200333471A1 (en)
CN (1) CN111834740A (en)
TW (1) TWI734982B (en)

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19860121A1 (en) * 1998-12-23 2000-07-13 Kathrein Werke Kg Dual polarized dipole emitter
KR100677093B1 (en) * 2000-05-31 2007-02-05 삼성전자주식회사 Planar type antenna
DE10361634A1 (en) * 2003-12-30 2005-08-04 Advanced Micro Devices, Inc., Sunnyvale Powerful low-cost monopole antenna for radio applications
US7498996B2 (en) * 2004-08-18 2009-03-03 Ruckus Wireless, Inc. Antennas with polarization diversity
JP4418375B2 (en) * 2005-01-25 2010-02-17 アルプス電気株式会社 Antenna device
US8325101B2 (en) * 2009-08-03 2012-12-04 Venti Group, LLC Cross-dipole antenna configurations
TWI433392B (en) * 2009-10-20 2014-04-01 Advanced Connection Tech Inc Circularly polarized antenna
TWI511365B (en) * 2012-12-13 2015-12-01 Acer Inc Mobile device and control method thereof
CN104659471A (en) * 2013-11-21 2015-05-27 深圳富泰宏精密工业有限公司 Inverted F-shaped antenna structure and portable electronic device provided with antenna structure
CN204793183U (en) * 2015-07-13 2015-11-18 中国人民解放军理工大学 Loaded dual -frenquency double polarization monopole microstrip antenna that singly presents in top
CN105186123B (en) * 2015-08-19 2017-09-15 南京邮电大学 A kind of plane circular polarized antenna
CN105226386A (en) * 2015-09-23 2016-01-06 深圳市万普拉斯科技有限公司 The circular polarized antenna structure of mobile terminal and mobile terminal
CN105655717B (en) * 2015-12-25 2018-11-06 宇龙计算机通信科技(深圳)有限公司 A kind of directional diagram reconstructable aerial and mobile terminal
CN106935971B (en) * 2015-12-29 2021-02-09 华为技术有限公司 Antenna and communication apparatus
CN205828657U (en) * 2016-06-01 2016-12-21 深圳市中联云达科技有限公司 Circular polarized antenna
CN106602267B (en) * 2016-11-25 2019-08-13 厦门大学 The B3/L1 dual mode satellite navigation antenna of double-head arrow anchor formula load

Also Published As

Publication number Publication date
TWI734982B (en) 2021-08-01
CN111834740A (en) 2020-10-27
TW202040869A (en) 2020-11-01

Similar Documents

Publication Publication Date Title
US10218066B2 (en) Antenna structure and wireless communication device using the same
US11411316B2 (en) Anti-jamming and reduced interference global positioning system receiver methods and devices
JP2018207468A (en) Antenna and wearable device
US8466837B2 (en) Hooked turnstile antenna for navigation and communication
Shen et al. A novel bidirectional antenna with broadband circularly polarized radiation in X-band
US20160181690A1 (en) Pentaband antenna
CN107966720B (en) Satellite signal receiver and satellite positioning system
US9614292B2 (en) Circularly polarized antenna
US20120218167A1 (en) Low cost patch antenna utilized in wireless lan applications
US8810471B2 (en) Circularly polarized ceramic patch antenna having extended ground for vehicle
CN107611606B (en) Antenna structure and terminal
US10270173B2 (en) Patch antenna
US20200333471A1 (en) Antenna structure and wireless communication device using the same
Cao et al. Bandwidth and gain enhancement for probe-fed CP microstrip antenna by loading with parasitical patches
CN105305051A (en) Elliptical circular polarization microstrip antenna
KR20090046590A (en) Microstrip patch type of antena
US20100295728A1 (en) Array antenna
US20100109962A1 (en) Circularly polarized antenna and an electronic device having the circularly polarized antenna
US11070307B2 (en) Circular patch array for anti-jam GPS
CN105305086A (en) Anti-interference microstrip array antenna
TWI474557B (en) Antenna module
CN205303681U (en) GPS antenna of built -in low noise power amplifier
CN109449586B (en) Circular polarization annular microstrip antenna with bent stub ground plane
US11145991B1 (en) Systems and methods for phase-coincidential dual-polarized wideband antenna arrays
CN101877432B (en) Antenna component

Legal Events

Date Code Title Description
AS Assignment

Owner name: AMBIT MICROSYSTEMS (SHANGHAI) LTD., CHINA

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:CHANG, YI-HAO;WANG, PO-CHI;REEL/FRAME:048915/0812

Effective date: 20190410

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE AFTER FINAL ACTION FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: ADVISORY ACTION MAILED

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION